#include <bits/stdc++.h>

void solve() {
  int N, ax, ay, bx, by, cx, cy; std::cin >> N >> ax >> ay >> bx >> by >> cx >> cy;
  std::cout << "4\n";
  int d[] = {1, 0, -1, 0, 1};
  for (int i = 0; i < 4; i++) {
    std::cout << cx+d[i] << " " << cy+d[i+1] << "\n";
  }
}

int main() {
  std::ios::sync_with_stdio(false);
	std::cin.tie(nullptr);

  int testcases = 1;
  //std::cin >> testcases;
  for (;testcases--;) solve();

  return 0;
}